David W. answered • 07/12/17
Tutor
4.7
(90)
Experienced Prof
This problem uses subtraction (that is, "cuts off") with borrowing from the next higher unit (that is: "borrow" 1 yard = 36 inches)..
You need to know that 1 yard = 36 inches.
4 yards 0 inches
- 29 inches
---------------------------- [can't take 29 from 0, so must "borrow" a yard]
3 yards 36 inches
- 29 inches
---------------------------- [new, you can subtract]
3 yards 7 inches
